And while you’re at it, try to make every day Earth Day. If your heart is in the right place, you’re at least partway there.

“Where does stuff come from and where does it go? That is a good organizing principle,” said Carolyn Chase, CEO of San Diego EarthWorks, the organization behind San Diego EarthFair. “One of the biggest things you can do is leave things cleaner than you found them. If you look at the world that way, you can’t go wrong.”